9.To
Blade Inserts
When blade inserts become dull enough so that it is noticeable when cutting, they should be rotated to a fresh edge or replaced entirely. A sharp blade works easier and results in longer blade life. The penalty paid for a dull blade is less blade life and greater wear and tear on all parts of the machine.
An advantage of the helical style cutterhead is that if knife inserts develop nicks, these inserts can be individually flipped or replaced without the need to disturb the other inserts.
If the jointer is used often, keeping a spare set of blade inserts on hand is recommended.
Gum and Pitch which collect on the inserts cause excessive friction as the work continues, resulting in overheating of the inserts, less efficient cutting, and consequent loss of blade life. Use "Gum and Pitch Remover" or oven cleaner, to wipe off the inserts.
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